US 12,458,948 B1
Functionalized silica nanoparticles for lead adsorption
Mohamed Abdelaty Habila, Riyadh (SA); Ahmad Saud Abdullah Alobaysi, Riyadh (SA); Ibrahim Aljammaz, Riyadh (SA); and Zeid Abdullah Alothman, Riyadh (SA)
Assigned to KING SAUD UNIVERSITY, Riyadh (SA)
Filed by KING SAUD UNIVERSITY, Riyadh (SA)
Filed on May 8, 2025, as Appl. No. 19/202,569.
Application 19/202,569 is a division of application No. 18/670,093, filed on May 21, 2024, granted, now 12,311,337.
Int. Cl. B01J 20/10 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); B01J 20/32 (2006.01); C22B 3/00 (2006.01); C22B 3/24 (2006.01)
CPC B01J 20/103 (2013.01) [B01J 20/28004 (2013.01); B01J 20/28019 (2013.01); B01J 20/3071 (2013.01); B01J 20/3078 (2013.01); B01J 20/3085 (2013.01); B01J 20/3204 (2013.01); B01J 20/3217 (2013.01); B01J 20/3251 (2013.01); C22B 3/24 (2013.01); C22B 13/04 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for separating lead from thallium, the method comprising: contacting a sample containing lead with EDTA and surfactant functionalized silica nanoparticles comprising about 53 atomic % to about 54 atomic % carbon, about 3 atomic % to about 4 atomic % nitrogen, about 33 atomic % to about 34 atomic % oxygen, and about 9 atomic % to about 10 atomic % silicon.